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<b>let </b><font color="Maroon" title="c1">S</font> be  non <a href="struct_0.html#V2" title="STRUCT_0:attr.2">empty</a>  <a href="struct_0.html#L1" title="STRUCT_0:struct.1">1-sorted</a> ;<br/><b>let </b><font color="Maroon" title="c2">e</font> be   <a href="struct_0.html#NM1" title="STRUCT_0:NM.1">Element</a> of <font color="Maroon" title="c1">S</font>;<br/><b>let </b><font color="Maroon" title="c3">x</font> be   <a href="struct_0.html#NM1" title="STRUCT_0:NM.1">Element</a> of <span class="p1">(<span class="default"><a href="waybel11.html#K4" title="WAYBEL11:func.4">Net-Str</a> <font color="Maroon" title="c2">e</font></span>)</span>;<br/>





<b>set </b><font color="Maroon" title="c4">N</font> =  <a href="waybel11.html#K4" title="WAYBEL11:func.4">Net-Str</a> <font color="Maroon" title="c2">e</font>;<br/>
<a NAME="E1:59"/><i><font color="Green" title="E32">A1</font></i>: 
( <font color="Maroon" title="c3">x</font> <a href="hidden.html#R2" title="HIDDEN:pred.2">in</a> the <a href="struct_0.html#U1" title="STRUCT_0:sel.1">carrier</a> of <span class="p1">(<span class="default"><a href="waybel11.html#K4" title="WAYBEL11:func.4">Net-Str</a> <font color="Maroon" title="c2">e</font></span>)</span> &amp; the <a href="struct_0.html#U1" title="STRUCT_0:sel.1">carrier</a> of <span class="p1">(<span class="default"><a href="waybel11.html#K4" title="WAYBEL11:func.4">Net-Str</a> <font color="Maroon" title="c2">e</font></span>)</span> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a> <span class="p1"><a href="domain_1.html#K6" title="DOMAIN_1:func.6">{</a><span class="default"><font color="Maroon" title="c2">e</font></span><a href="domain_1.html#K6" title="DOMAIN_1:func.6">}</a></span> )
 
<b>by </b><i><a class="ref" href="waybel11.html#D11" target="_self" title="WAYBEL11:def.11">Def11</a></i>;<br/>
<a NAME="E2:59"/><b>then </b><i><font color="Green" title="E33">A2</font></i>: 
<font color="Maroon" title="c3">x</font> <a href="hidden.html#R1" title="HIDDEN:pred.1">=</a> <font color="Maroon" title="c2">e</font>
 
<b>by </b><i><a class="ref" href="tarski.html#D1" title="TARSKI:def.1">TARSKI:def 1</a></i>;<br/>
<b>thus </b><span class="p1">(<span class="default"><a href="waybel11.html#K4" title="WAYBEL11:func.4">Net-Str</a> <font color="Maroon" title="c2">e</font></span>)</span> <a href="waybel_0.html#K2" title="WAYBEL_0:func.2">.</a> <font color="Maroon" title="c3">x</font> = 
<span class="p1">(<span class="default"><a href="partfun1.html#K6" title="PARTFUN1:func.6">id</a> <span class="p2"><a href="domain_1.html#K6" title="DOMAIN_1:func.6">{</a><span class="default"><font color="Maroon" title="c2">e</font></span><a href="domain_1.html#K6" title="DOMAIN_1:func.6">}</a></span></span>)</span> <a href="funct_1.html#K1" title="FUNCT_1:func.1">.</a> <font color="Maroon" title="c3">x</font>
<b>by </b><i><a class="ref" href="waybel11.html#D11" target="_self" title="WAYBEL11:def.11">Def11</a></i>
<br/>.= 
<font color="Maroon" title="c2">e</font>
<b>by </b><i><a class="txt" href="waybel11.html#E1:59"><i><font color="Green" title="E32">A1</font></i></a>, <a class="txt" href="waybel11.html#E2:59"><i><font color="Green" title="E33">A2</font></i></a>, <a class="ref" href="funct_1.html#T35" title="FUNCT_1:th.35">FUNCT_1:35</a></i>
;<br/>


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